<template>
    <div class="login">
        <el-form ref="loginRef" :model="loginForm" :rules="loginRules" class="login-form">
            <h3 class="title">宠物之家</h3>
            <el-form-item prop="customerName">
                <el-input
                        v-model="loginForm.customerName"
                        type="text"
                        size="large"
                        auto-complete="off"
                        placeholder="昵称"
                >
                    <template #prefix><svg-icon icon-class="user" class="el-input__icon input-icon" /></template>
                </el-input>
            </el-form-item>
            <el-form-item prop="customerPwd">
                <el-input
                        v-model="loginForm.customerPwd"
                        type="password"
                        size="large"
                        auto-complete="off"
                        placeholder="密码"
                        @keyup.enter="handleLogin"
                >
                    <template #prefix><svg-icon icon-class="password" class="el-input__icon input-icon" /></template>
                </el-input>
            </el-form-item>
            <el-form-item prop="code" v-if="captchaEnabled">
                <el-input
                        v-model="loginForm.code"
                        size="large"
                        auto-complete="off"
                        placeholder="验证码"
                        style="width: 63%"
                        @keyup.enter="handleLogin"
                >
                    <template #prefix><svg-icon icon-class="validCode" class="el-input__icon input-icon" /></template>
                </el-input>
                <div class="login-code">
                    <img :src="codeUrl" @click="getCode" class="login-code-img"/>
                </div>
            </el-form-item>
            <el-checkbox v-model="loginForm.rememberMe" style="margin:0px 0px 25px 0px;">记住密码</el-checkbox>
            <el-form-item style="width:100%;">
                <el-button
                        :loading="loading"
                        size="large"
                        type="primary"
                        style="width:100%;"
                        @click.prevent="handleLogin"
                >
                    <span v-if="!loading">登 录</span>
                    <span v-else>登 录 中...</span>
                </el-button>
                <div style="float: right;" v-if="register">
                    <router-link class="link-type" :to="'/userRegister'">立即注册</router-link>
                </div>
            </el-form-item>
        </el-form>

    </div>
</template>

<script setup>
    import { getCodeImg } from "@/api/login";
    import Cookies from "js-cookie";
    import { encrypt, decrypt } from "@/utils/jsencrypt";


    import useCustomerStore from '@/store/modules/customer.js'
    const customerStore = useCustomerStore()

    const route = useRoute();
    const router = useRouter();
    const { proxy } = getCurrentInstance();

    const loginForm = ref({
        customerName: "",
        customerPwd: "",
        rememberMe: false,
        code: "",
        uuid: ""
    });

    const loginRules = {
        customerName: [{ required: true, trigger: "blur", message: "请输入您的昵称" }],
        customerPwd: [{ required: true, trigger: "blur", message: "请输入您的密码" }],
        code: [{ required: true, trigger: "change", message: "请输入验证码" }]
    };

    const codeUrl = ref("");
    const loading = ref(false);
    // 验证码开关
    const captchaEnabled = ref(true);
    // 注册开关
    const register = ref(true);
    const redirect = ref(undefined);

    watch(route, (newRoute) => {
        redirect.value = newRoute.query && newRoute.query.redirect;
    }, { immediate: true });

    function handleLogin() {
        proxy.$refs.loginRef.validate(valid => {
            if (valid) {
                loading.value = true;
                // 勾选了需要记住密码设置在 cookie 中设置记住用户名和密码
                if (loginForm.value.rememberMe) {
                    Cookies.set("customerName", loginForm.value.username, { expires: 30 });
                    Cookies.set("customerPwd", encrypt(loginForm.value.password), { expires: 30 });
                    Cookies.set("rememberMe", loginForm.value.rememberMe, { expires: 30 });
                } else {
                    // 否则移除
                    Cookies.remove("customerName");
                    Cookies.remove("customerPwd");
                    Cookies.remove("rememberMe");
                }
                // 调用action的登录方法
                customerStore.login(loginForm.value).then(() => {
                    const query = route.query;
                    const otherQueryParams = Object.keys(query).reduce((acc, cur) => {
                        if (cur !== "redirect") {
                            acc[cur] = query[cur];}
                        return acc;
                    }, {});
                    router.push({ path: redirect.value || "/", query: otherQueryParams });
                }).catch(() => {
                    loading.value = false;
                    // 重新获取验证码
                    if (captchaEnabled.value) {
                        getCode();
                    }});}});}

    function getCode() {
        getCodeImg().then(res => {
            captchaEnabled.value = res.captchaEnabled === undefined ? true : res.captchaEnabled;
            if (captchaEnabled.value) {
                codeUrl.value = "data:image/gif;base64," + res.img;
                loginForm.value.uuid = res.uuid;
            }
        });
    }

    function getCookie() {
        const username = Cookies.get("customerName");
        const password = Cookies.get("customerPwd");
        const rememberMe = Cookies.get("rememberMe");
        loginForm.value = {
            customerName: username === undefined ? loginForm.value.customerName : customerName,
            customerPwd: password === undefined ? loginForm.value.customerPwd : decrypt(customerPwd),
            rememberMe: rememberMe === undefined ? false : Boolean(rememberMe)
        };
    }

    getCode();
    getCookie();
</script>

<style lang='scss' scoped>
    .login {
        display: flex;
        justify-content: center;
        align-items: center;
        height: 600px;
        background-image: url("../assets/images/login3.png");
        background-size: cover;
    }
    .title {
        margin: 0px auto 30px auto;
        text-align: center;
        color: #707070;
    }

    .login-form {
        border-radius: 6px;
        background: #ffffff;
        width: 400px;
        padding: 25px 25px 5px 25px;
        .el-input {
            height: 40px;
            input {
                height: 40px;
            }
        }
        .input-icon {
            height: 39px;
            width: 14px;
            margin-left: 0px;
        }
    }
    .login-tip {
        font-size: 13px;
        text-align: center;
        color: #bfbfbf;
    }
    .login-code {
        width: 33%;
        height: 40px;
        float: right;
        img {
            cursor: pointer;
            vertical-align: middle;
        }
    }
    .login-code-img {
        height: 40px;
        padding-left: 12px;
    }
</style>
